Robert Langdon, professor of religious symbology at Harvard, is in Paris to give an evening lecture. He’s also scheduled to meet with a revered curator from the world-famous Louvre museum, but strangely the curator never arrives. Later, Langdon receives an urgent late-night call: the curator has been murdered in the museum, and alongside the body the killer has written a series of baffling codes. The police need Langdon’s help to decipher them.

In a terrifying twist, Langdon himself becomes the primary suspect in the murder. With the help of French cryptologist Sophie Neveu, he must flee the scene and deciper a mystifying trail of clues. If Robert and Sophie can’t solve the puzzle in time, an ancient truth could be lost forever—and both their lives hang in the balance.